/*
 * Provider NPI functions
 *
 * Copyright (c) 2021 Virtuozzo International GmbH
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met :
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and / or other materials provided with the distribution.
 * 3. Neither the names of the copyright holders nor the names of their contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef __WSK_COMPLETION_H__
#define __WSK_COMPLETION_H__

#include "..\inc\vio_wsk.h"
#include "wsk-workitem.h"

typedef enum _EWSKState
{
    wsksUndefined,
    wsksSingleIOCTL,
    wsksSend,
    wsksReceive,
    wsksDisconnect,
    wsksDisconnected,
    wsksAcceptLocal,
    wsksAcceptRemote,
    wsksBind,
    wsksListen,
    wsksConnectEx,
    wsksFinished,
} EWSKState, *PEWSKState;

typedef struct _VIOSOCKET_COMPLETION_CONTEXT
{
    volatile LONG ReferenceCount;
    PVIOWSK_SOCKET Socket;
    PWSK_WORKITEM CloseWorkItem;
    PDEVICE_OBJECT DeviceObject;
    EWSKState State;
    PIRP MasterIrp;
    PIO_STATUS_BLOCK IoStatusBlock;
    PSIZE_T BytesReturned;
    PKEVENT Event;
    ULONG_PTR IOSBInformation;
    int UseIOSBInformation : 1;
    union {
        struct
        {
            PWSK_SOCKET Socket;
            PSOCKADDR LocalAddress;
            PSOCKADDR RemoteAddress;
        } Accept;
        struct
        {
            PMDL NextMdl;
            ULONG CurrentMdlOffset;
            ULONG CurrentMdlSize;
            ULONG LastMdlSize;
        } Transfer;
        struct
        {
            PSOCKADDR RemoteAddress;
        } BindConnect;
    } Specific;
} VIOSOCKET_COMPLETION_CONTEXT, *PVIOSOCKET_COMPLETION_CONTEXT;

PVIOSOCKET_COMPLETION_CONTEXT
WskCompContextAlloc(_In_ EWSKState State,
                    _In_ PVIOWSK_SOCKET Socket,
                    _In_opt_ PIRP MasterIrp,
                    _In_opt_ PIO_STATUS_BLOCK IoStatusBlock);

void WskCompContextReference(_Inout_ PVIOSOCKET_COMPLETION_CONTEXT CompContext);

void WskCompContextDereference(_Inout_ PVIOSOCKET_COMPLETION_CONTEXT CompContext);

NTSTATUS
WskCompContextSendIrp(_Inout_ PVIOSOCKET_COMPLETION_CONTEXT CompContext, _In_ PIRP Irp);

NTSTATUS
WskCompContextAllocCloseWorkItem(PVIOSOCKET_COMPLETION_CONTEXT CompContext);

#endif
